Processing of Plans and Specifications Prepared by Corporations or Architectural/Engineering Firms. Category: Department OrderSub Category: infra-projSeries: 1984No: 13File: DO_013_S1984.pdfDate: Monday, February 27, 1984Tags: Plans Specifications rchitectural Engineering Firms infra 013 Read more about Processing of Plans and Specifications Prepared by Corporations or Architectural/Engineering Firms.